Modeling gas lamp pipes
Create a profile with a Bezier Curve.In Object Mode > SHIFT + "A"> Curve > Bezier.



Then in the Object Panel > Convert to Mesh from Curve *(Need to be in Object Mode).



Tab into Edit Mode select all of the vertices by pressing "A" then extrude by pressing "E" and then the letter of the axis you want to extrude in. For me it was "X" "Z".



Place your cursor here and press ALT +"R". You can adjust the angle Before you do anything else.



Repeat for the bottom changing the angle to a negative value.



I believe in real life those are tapered. Select the top ring of vertices and go into Proportional Edit Mode and scale to taste. I used Linear Falloff.